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Photo by Innerbody Research Though there are other copper peptides, and a few peptide complexes may contain copper as an ingredient, the term copper peptides in skin care almost always refers to one particular peptide: copper tripeptide-1, also known as GHK-Cu.3 GHK-Cu consists of two parts: the tripeptide GHK (amino acid sequence glycyl-histidyl-lysine) and copper (Cu).12 The tripeptide GHK without the copper was discovered in 1973 by Dr

While some in-vitro (test tube) and animal studies suggest that copper peptides may act as a mild DHT blocker by inhibiting the 5-alpha reductase enzyme, it is important to note that clinical human data is still evolving, and it is not as potent as prescription DHT blockers (like Finasteride)

Each has distinct pharmacokinetic properties and distinct study applications

See the New England Journal of Medicine trial